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(2,716)
- Faculty Publications (207)
- 2025
- Working Paper
How Do Voters Respond to Cues by Charismatic Leaders? Evidence from Brazil
By: Paula Rettl
While elite-cue effects on public opinion are well-documented, questions remain as
to when and why voters use elite cues to inform their opinions and behaviors. This
study contributes to answer these questions by testing whether voters react to cues
by charismatic... View Details
Keywords: Elites; Public Engagement; Politics; Political Affiliation; Political Campaigns; Political Influence; Political Leadership; Political Economy; Survey Research; COVID-19; COVID-19 Pandemic; COVID; Cognitive Psychology; Cognitive Biases; Political Elections; Voting; Power and Influence; Identity; Behavior; Latin America; Brazil
Rettl, Paula. "How Do Voters Respond to Cues by Charismatic Leaders? Evidence from Brazil." Harvard Business School Working Paper, No. 24-022, October 2023. (Revised June 2025.)
- June 2023
- Case
Investing in the Climate Transition at Neuberger Berman
By: George Serafeim and Benjamin Maletta
By mid-2023, Neuberger Berman (NB), an active asset manager, had grown its assets under management to about half a trillion dollars and took pride in its client centricity and innovative spirit. Responding to client demand for investment products that integrated... View Details
Keywords: Carbon Emissions; Sustainability; Decarbonization; Performance; Risk Assessment; Opportunities; Environmental Sustainability; Carbon Footprint; Business Analysis; Investing; Regulation; Asset Management; Investment Strategy; Climate Change; Transition; Analysis; Product Positioning; Strategy; Investment Portfolio; Financial Services Industry; Energy Industry
Serafeim, George, and Benjamin Maletta. "Investing in the Climate Transition at Neuberger Berman." Harvard Business School Case 123-092, June 2023.
- 2023
- Working Paper
Setting Gendered Expectations? Recruiter Outreach Bias in Online Tech Training Programs
By: Jacqueline N. Lane, Karim R. Lakhani and Roberto Fernandez
Competence development in digital technologies, analytics, and artificial intelligence is increasingly important to all types of organizations and their workforce. Universities and corporations are investing heavily in developing training programs, at all tenure... View Details
Keywords: STEM; Selection and Staffing; Gender; Prejudice and Bias; Training; Equality and Inequality; Competency and Skills
Lane, Jacqueline N., Karim R. Lakhani, and Roberto Fernandez. "Setting Gendered Expectations? Recruiter Outreach Bias in Online Tech Training Programs." Harvard Business School Working Paper, No. 23-066, April 2023. (Accepted by Organization Science.)
- 2023
- Book
Research Handbook on Digital Strategy
By: Carmelo Cennamo, Giovanni Battista Dagnino and Feng Zhu
This state-of-the-art Research Handbook presents a comprehensive overview of the key strategic challenges that firms face when dealing with digital markets, platforms, and products and services, from old strategy questions in need of different solutions to entirely... View Details
Keywords: Digital Strategy
Cennamo, Carmelo, Giovanni Battista Dagnino, and Feng Zhu, eds. Research Handbook on Digital Strategy. Edward Elgar Publishing, 2023.
- April 2023
- Case
Elliott Management: Capital Allocation in Biopharma
By: Amitabh Chandra, Paul Clancy and Lauren Gunasti
The case explores the intersection of capital allocation and shareholder activism in the biopharmaceutical industry. As many biopharma companies face looming patent expirations for key medicines, the case asks the question of whether investing in R&D and M&A is an... View Details
Keywords: Finance; Strategy; Capital Allocation; Biopharmaceutical Industry; Shareholder Activism; Investment Activism; Resource Allocation; Research and Development; Business and Shareholder Relations; Corporate Strategy; Pharmaceutical Industry
Chandra, Amitabh, Paul Clancy, and Lauren Gunasti. "Elliott Management: Capital Allocation in Biopharma." Harvard Business School Case 623-045, April 2023.
- March 2023 (Revised May 2023)
- Technical Note
Technical Note: The Traits of Entrepreneurs
By: Jo Tango and Alys Ferragamo
Why do some entrepreneurs succeed and others do not? Are there personality traits that lead someone to become an entrepreneur? Although many questions still remain, there has been significant research on the “entrepreneurial personality.” This note provides an... View Details
Keywords: Entrepreneur; Innovation; Personality; Personality Traits; Risk Preference; Big Five; Locus Of Control; Success; Entrepreneurship; Personal Characteristics
Tango, Jo, and Alys Ferragamo. "Technical Note: The Traits of Entrepreneurs." Harvard Business School Technical Note 823-099, March 2023. (Revised May 2023.)
- December 2022
- Article
The Contribution of Price Growth to Pharmaceutical Revenue Growth in the United States: Evidence from Medicines Sold in Retail Pharmacies
By: Pragya Kakani, Michael Chernew and Amitabh Chandra
Context: To what extent does pharmaceutical revenue growth depend on new medicines versus increasing prices for existing medicines? Moreover, does using list prices, as is commonly done, instead of prices net of confidential rebates offered by manufacturers, which are... View Details
Kakani, Pragya, Michael Chernew, and Amitabh Chandra. "The Contribution of Price Growth to Pharmaceutical Revenue Growth in the United States: Evidence from Medicines Sold in Retail Pharmacies." Journal of Health Politics, Policy and Law 47, no. 6 (December 2022): 629–648.
- September 2022
- Article
Find and Replace: R&D Investment Following the Erosion of Existing Products
By: Joshua L. Krieger, Xuelin Li and Richard T. Thakor
How do innovative firms react when existing products experience negative shocks? We explore this question with detailed project-level data from drug development firms. Using FDA Public Health Advisories as idiosyncratic negative shocks to approved drugs, we first... View Details
Keywords: R&D Investments; Drug Development; Product Shocks; M&A; Biopharmaceutical Industry; FDA; System Shocks; Research and Development; Investment; Decision Making; Pharmaceutical Industry
Krieger, Joshua L., Xuelin Li, and Richard T. Thakor. "Find and Replace: R&D Investment Following the Erosion of Existing Products." Management Science 68, no. 9 (September 2022): 6552–6571.
- August 2022
- Case
In-Q-Tel: Innovation On A Mission
By: Joshua Lev Krieger and Josh Lerner
In 2022, the leaders of In-Q-Tel (IQT) considered what was next for the unique mission-driven organization. Since 1999, IQT had one mission: to be the most sophisticated source of strategic technical knowledge and capabilities to the U.S. government and its allies. IQT... View Details
Keywords: Mission and Purpose; National Security; Technological Innovation; Research; Geopolitical Units; Risk Management; Recruitment; Growth and Development Strategy; Venture Capital; Knowledge Management; Information Industry; Banking Industry
Krieger, Joshua Lev, and Josh Lerner. "In-Q-Tel: Innovation On A Mission." Harvard Business School Case 823-031, August 2022.
- 2022
- Article
Data Poisoning Attacks on Off-Policy Evaluation Methods
By: Elita Lobo, Harvineet Singh, Marek Petrik, Cynthia Rudin and Himabindu Lakkaraju
Off-policy Evaluation (OPE) methods are a crucial tool for evaluating policies in high-stakes domains such as healthcare, where exploration is often infeasible, unethical, or expensive. However, the extent to which such methods can be trusted under adversarial threats... View Details
Lobo, Elita, Harvineet Singh, Marek Petrik, Cynthia Rudin, and Himabindu Lakkaraju. "Data Poisoning Attacks on Off-Policy Evaluation Methods." Proceedings of the Conference on Uncertainty in Artificial Intelligence (UAI) 38th (2022): 1264–1274.
- May 2022
- Case
Timnit Gebru: 'SILENCED No More' on AI Bias and The Harms of Large Language Models
By: Tsedal Neeley and Stefani Ruper
Dr. Timnit Gebru—a leading artificial intelligence (AI) computer scientist and co-lead of Google’s Ethical AI team—was messaging with one of her colleagues when she saw the words: “Did you resign?? Megan sent an email saying that she accepted your resignation.” Heart... View Details
Neeley, Tsedal, and Stefani Ruper. "Timnit Gebru: 'SILENCED No More' on AI Bias and The Harms of Large Language Models." Harvard Business School Case 422-085, May 2022.
- 2022
- Article
Exploring Counterfactual Explanations Through the Lens of Adversarial Examples: A Theoretical and Empirical Analysis.
By: Martin Pawelczyk, Chirag Agarwal, Shalmali Joshi, Sohini Upadhyay and Himabindu Lakkaraju
As machine learning (ML) models become more widely deployed in high-stakes applications, counterfactual explanations have emerged as key tools for providing actionable model explanations in practice. Despite the growing popularity of counterfactual explanations, a... View Details
Keywords: Machine Learning Models; Counterfactual Explanations; Adversarial Examples; Mathematical Methods
Pawelczyk, Martin, Chirag Agarwal, Shalmali Joshi, Sohini Upadhyay, and Himabindu Lakkaraju. "Exploring Counterfactual Explanations Through the Lens of Adversarial Examples: A Theoretical and Empirical Analysis." Proceedings of the International Conference on Artificial Intelligence and Statistics (AISTATS) 25th (2022).
- April 27, 2022
- Article
Inequality in Researchers' Minds: Four Guiding Questions for Studying Subjective Perceptions of Economic Inequality
By: Jon M. Jachimowicz, Shai Davidai, Daniela Goya-Tocchetto, Barnabas Szaszi, Martin Day, Stephanie Tepper, L. Taylor Phillips, M. Usman Mirza, Nailya Ordabayeva and Oliver P. Hauser
Subjective perceptions of inequality can substantially influence policy attitudes, public health metrics, and societal well-being, but the lack of consensus in the scientific community on how to best operationalize and measure these perceptions may impede progress on... View Details
Jachimowicz, Jon M., Shai Davidai, Daniela Goya-Tocchetto, Barnabas Szaszi, Martin Day, Stephanie Tepper, L. Taylor Phillips, M. Usman Mirza, Nailya Ordabayeva, and Oliver P. Hauser. "Inequality in Researchers' Minds: Four Guiding Questions for Studying Subjective Perceptions of Economic Inequality." Journal of Economic Surveys (April 27, 2022).
- March 2022
- Teaching Note
Inclusive Innovation at Mass General Brigham
By: Katherine Coffman and Olivia Hull
Teaching Note for HBS Case No. 921-006, “Inclusive Innovation at Mass General Brigham." This case invites students to explore the individual and structural factors that lead to an under-representation of women in male-dominated domains, and to think critically about... View Details
- March 2022
- Article
Where to Locate COVID-19 Mass Vaccination Facilities?
By: Dimitris Bertsimas, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li and Alessandro Previero
The outbreak of COVID-19 led to a record-breaking race to develop a vaccine. However, the limited vaccine capacity creates another massive challenge: how to distribute vaccines to mitigate the near-end impact of the pandemic? In the United States in particular, the new... View Details
Keywords: Vaccines; COVID-19; Health Care and Treatment; Health Pandemics; Performance Effectiveness; Analytics and Data Science; Mathematical Methods
Bertsimas, Dimitris, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li, and Alessandro Previero. "Where to Locate COVID-19 Mass Vaccination Facilities?" Naval Research Logistics Quarterly 69, no. 2 (March 2022): 179–200.
- January 10, 2022
- Article
The Link Between Income, Income Inequality, and Prosocial Behavior Around the World: A Multiverse Approach
By: Lucia Macchia and Ashley V. Whillans
The questions of whether high-income individuals are more prosocial than low-income individuals and whether income inequality moderates this effect have received extensive attention. We shed new light on this topic by analyzing a large-scale dataset with a... View Details
Keywords: Prosocial Behavior; Income Inequality; Behavior; Philanthropy and Charitable Giving; Income
Macchia, Lucia, and Ashley V. Whillans. "The Link Between Income, Income Inequality, and Prosocial Behavior Around the World: A Multiverse Approach." Social Psychology (January 10, 2022): 375–386.
- December 2021
- Article
Left- and Right-Leaning News Organizations Use Negative Emotional Content and Elicit User Engagement Similarly
By: Andrea Bellovary, Nathaniel Young and Amit Goldenberg
Negativity has historically dominated news content; however, little research has examined how news organizations use affect on social media, where content is generally positive. In the current project we ask a few questions: Do news organizations on Twitter use... View Details
Keywords: Negative Press; Twitter; Political Affiliation; Affect; News; Media; Internet and the Web; Emotions; Perspective; Social Media
Bellovary, Andrea, Nathaniel Young, and Amit Goldenberg. "Left- and Right-Leaning News Organizations Use Negative Emotional Content and Elicit User Engagement Similarly." Affective Science 2, no. 4 (December 2021): 391–396.
- December 2021
- Article
The Evolutionary Nature of Breakthrough Innovation: An Empirical Investigation of Firm Search Strategies
By: Dominika Kinga Randle and Gary P. Pisano
Breakthrough innovation has been an important topic of study for generations of scholars. Previous research in this domain has focused on exploring the way breakthroughs emerge from cumulative combination and recombination of prior technologies and knowledge components... View Details
Keywords: Breakthrough Innovation; Exploration And Exploitation; Search Strategy; Innovation and Invention; Technological Innovation; Strategy
Randle, Dominika Kinga, and Gary P. Pisano. "The Evolutionary Nature of Breakthrough Innovation: An Empirical Investigation of Firm Search Strategies." Strategy Science 6, no. 4 (December 2021): 290–304.
- 2022
- Working Paper
ESG: Hyperboles and Reality
By: George Serafeim
ESG has rapidly become a household name leading to both confusion about what it means and creating unrealistic expectations about its effects. In this paper, I draw on more than a decade of research to dispel several myths about ESG and provide answers to important... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Reporting; ESG Ratings; Sustainability; Corporate Social Responsibility and Impact; Environmental Sustainability; Performance; Corporate Disclosure; Reports
Serafeim, George. "ESG: Hyperboles and Reality." Harvard Business School Working Paper, No. 22-031, November 2021.
- 2021
- Chapter
Digital Infrastructure
By: Shane Greenstein
What determines the supply of innovative digital infrastructure and how does variance in supply shape the performance of digital services? The essay reviews research into the economic impact of deployment, innovation, and adoption of digital infrastructure. It... View Details
Keywords: Information Technology; Infrastructure; Economics; Policy; Research; Analysis; United States
Greenstein, Shane. "Digital Infrastructure." In Economic Analysis and Infrastructure Investment, edited by Edward L. Glaeser and James Poterba. National Bureau of Economic Research, and University of Chicago Press, 2021.